Place salmon on baking sheet and brush with garlic-oil mixture. Cook 4–5 minutes on each side (5 minutes per inch / 2.5 cm of thickness). Test by poking fork about halfway inside thickest part of salmon, turn fork a quarter of turn to see if the fish easily flakes apart. When done, remove from oven and let rest for 1–2 minutes. Do not overcook; it will finish cooking after removed from oven.